The most straightfoward way is to either freeze to edge (see http://radiantcms.org/download/) or install RVM -> install your preferred flavor of ruby, and create a gemset for your project(s) or differing versions of Radiant.
RVM - http://rvm.beginrescueend.com/ - Joel On Sat, Jul 10, 2010 at 11:54 AM, Horst Rischbode <ho...@horibo.de> wrote: > Hello, > > on my development machine, I'm on 0.8.1. Now I want to switch to 0.9. But I > still need to be able, to support the old version. > > How to install 0.9 together with 0.8.1? > > Any help would be appreciated! > > Horst >